Analysis and application of bolt and mesh reinforcement and anchor wire coupling support mechanism under high horizontal site-stress

Based on Numerical simulation technology, coupling support mechanics of rock bolt and mesh reinforcement and concrete spray-up and anchor wire has been. analyzed. According to actual engineering of the fifth coal mine of Hebi coal group, the reasonable structure of bolt and mesh reinforcement and anchor wire and base angle bolt support under high horizontal site-stress has been analyzed. It has been found that under high horizontal site-stress the distortion is the main reason for roadway breakage. To avoid breakage of roadway, the reasonable structure and parameter of rock bolt and mesh reinforcement and concrete spray-up and Anchor wire and base angle bolt support can be reinforced to overcome distortion and get good supporting effect.